Jay Respler asked for a clock tick program. I have seen some, but if you are satisfied with DOS and standard speaker, save the following as e.g. C:\SRC\TICK.BAS and run C:\DOS\qbasic /RUN C:\SRC\tick.bas The program could be extended to read a QuickSat output, skip all points in the past, read ahead a few lines, and show them on the screen. A similar program can easily be written for Windows. I should have a few that came with my PC and require a sound card. (I also have a driver, that emulates a sound card on the speaker) -- PRINT "Press any key to interrupt!" g$ = TIME$ WHILE INKEY$ = "" WHILE TIME$ = g$: WEND g$ = TIME$ LOCATE 23, 1 PRINT g$ BEEP WEND -- ------------------------------------------------------------ -- bjorn@tt-tech.se (office) +46-8-59095783 -- -- b_gimle@algonet.se (home) +46-8-7428086 -- -- 59.22371 N, 18.22857 E AND member of : -- -- http://www.algonet.se/~b_gimle SeeSat-L -- ------------------------------------------------------------